Material · Aluminum Alloys
Aluminum 2024-T351
The aerospace fatigue specialist: damage-tolerant alloy for cyclically loaded structures.
Price index: $$
Material properties
| Parameter | Value |
|---|---|
| Tensile strength | 470 MPa |
| Yield strength | 325 MPa |
| Hardness | 120 HB |
| Density | 2.78 g/cm³ |
Choose it when
Choose 2024 for fatigue-critical, damage-tolerant structure: cracks grow slowly and predictably, and it frequently outlasts both 6061 and 7075 under cyclic loading.
Look elsewhere when
Bare 2024 is the least corrosion-resistant common aluminum — never ship it unprotected into humid service; always anodize, chromate or prime. Avoid welding entirely.
Compatible finishes
As-Machined
The baseline finish: straight off the machine, fastest and cheapest.
Anodizing Type II (Clear)
The standard aluminum finish: hard, clear oxide that keeps the metallic look.
Anodizing Type II (Dyed)
Color that cannot peel: dye locked inside the part’s own oxide layer.
Hardcoat Anodizing Type III
Wear armor for aluminum: an oxide layer as hard as tool steel.
Chromate Conversion (Alodine / Chem Film)
Corrosion protection that stays conductive — the EMI-grounding finish for aluminum.
Bead Blasting
The uniform matte look: erases tool marks, hides fingerprints, preps perfect anodizing.
Brushed Finish
The appliance-grade look: directional satin grain on panels, bezels and show faces.
Powder Coating
Baked-on polymer armor: any RAL color, outdoor-proof, the toughest cosmetic coating.
Wet Painting
Any color, any gloss, any substrate: the flexible coat for plastics and appearance prototypes.
Vibratory Tumbling
Batch deburring by the bowl-full: every edge broken, every burr gone, at volume prices.
Laser Marking
Permanent identification with zero dimensional change: serials, logos and codes burned in, not stuck on.
Typical applications
- Aircraft structural fittings and splices
- Cyclically loaded actuator brackets
- Legacy aerospace replacement parts
- Vibration test rigs
Compared with similar grades
| Property | Aluminum 2024-T351 | Aluminum 6061-T6 | Aluminum 6063-T5 | Aluminum 7075-T6 |
|---|---|---|---|---|
| Tensile strength | 470 MPa | 310 MPa | 186 MPa | 572 MPa |
| Yield strength | 325 MPa | 276 MPa | 145 MPa | 503 MPa |
| Hardness | 120 HB | 95 HB | 60 HB | 150 HB |
| Density | 2.78 g/cm³ | 2.70 g/cm³ | 2.69 g/cm³ | 2.81 g/cm³ |
| Price index | $$ | $ | $ | $$ |
| Machinability | 3/5 | 5/5 | 4/5 | 3/5 |
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